[Exist-open] Passing HTTP request paramters to XSLTservlet stylesheets?

[Werthmuller, D. <dwe...@ct...>]

The documentation is fairly clear how to pass request parameters from an xqueryservlet  to the xslt stylesheets, but a bit less clear how to pass all http request parameters to the xsltservlet.  http://exist-db.org/exist/apps/doc/urlrewrite.xml?q=xslt%20request%20attribute&field=all&id=D2.2.7#D2.2.7

Here is what we are trying to do:
Migrate away from cocoon - very long time cocoon users since 2001, since 2009 we've been using cocoon with eXist-db for content storage.  BTW - if there others who have developed controller files that replace cocoon sitemap files and interested in sharing let me know.

With a large investment in xsl stylesheets that produce our entire site dynamically, I'd like to retain this investment while we migrate to Exist-db 2.0.

Our site makes use of http parameters to select different queries/layouts/output types.
For example:  http://www.ctg.albany.edu/publications/reports/xml?chapter=2  produces just chapter 2 content from the xml file xml.xml.
And
http://www.ctg.albany.edu/publications/reports/xml?chapter=2&PrintVersion=1 produces just chapter 2 then uses a separate stylesheet to produce a printer friendly version.
And
http://www.ctg.albany.edu/publications/reports/xml?chapter=2&PrintVersion=2 produces the same as PDF.

These parameters; chapter, PrintVersion  and many more control these xslt stylesheets.
Question is how do I make these available to the xsl?



Here is what I've tried:
Relevant sections of a controller.xql
Is there an elegant way to get all the parameters regardless of their name? vs request:get-parameter for each?

let $query := request:get-parameter("chapter", ())

(: If the not at the root, and requesting a URL with out an extension. Assuming we
: are looking for the XML file in the directory with the same name :)
else if (ends-with ($exist:path, $resource))  then
        <dispatch xmlns="http://exist.sourceforge.net/NS/exist">
        <forward url="/publications/reports/xml_lessons/xml_lessons.xml"></forward>
            <set-attribute name="xquery.attribute" value="xslt.chapter"/>
            <view>
                <forward servlet="XSLTServlet">
                <set-attribute name="xslt.stylesheet" value="xmldb:exist:///db/xmltoolkit/stylesheets/publication.xsl"/>
                <!-- http request param are passed to XSLT servlet via request attribute -->

                <set-attribute name="xslt.input" value="xslt.chapter"/>
                <!-- custom paramters can be passed to the stylesheet this way  -->

                            <set-attribute name="xslt.output.media-type" value="text/html"/>
                          <set-attribute name="xslt.output.method" value="xhtml"/>
                             <set-attribute name="xslt.output.doctype-public"
                             value="-//W3C//DTD XHTML 1.0 Transitional//EN"/>
                             <set-attribute name="xslt.output.doctype-system"
                             value="resources/xhtml1-transitional.dtd"/>
                             <set-attribute name="xslt.xinclude-path" value="xmldb:exist:///db/xmltoolkit/stylesheets/"/>
                 </forward>

            </view>
                        <cache-control cache="no"/>
        </dispatch>


Section of the XSL stylesheet expecting parameters.
<!-- get parameters -->
    <xsl:param name="section"/>
    <xsl:param name="chapter"/>
    <xsl:param name="pervious"/>
    <xsl:param name="next"/>
    <xsl:param name="sub"/>
    <xsl:param name="guidelink"/>
    <xsl:param name="all"/>
    <xsl:param name="gov"/>
    <xsl:param name="form"/>
    <xsl:param name="ekey"/>

Thanks
                Derek